Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 114)

Chapter
8
Publication 2755-833
Configuration: Extended
Match Table and Counters
You can use the screen illustrated below to set up match code entries
in the Extended Match Code Table. You can define up to 128 entries
here that provide added flexibility in response to incoming data over
the Primary Match Codes described in the previous chapter.
Using Extended Match Codes you can compare all incoming data
against table entries that you create to meet your own unique needs.
The decoder can then count valid matches, and optionally fire one or
more outputs.
Extended Match Codes provide a way to gather extremely detailed
information based on decoder activity, and to exercise an additional
level of control over decoder output activities.
The Extended Match Codes differ from the Primary Match Codes in
a number of ways:
•
Extended Match Code counters appear on the same screen from
which they are controlled (the primary counters appear on a
separate Status and Primary Counters screen)
•
Extended Match Codes can activate multiple outputs, the duration
of which are defined in the Primary Match Code Table (Primary
Match Codes can each fire only a single output).
This screen displays the extended match code table in eight sets of
sixteen entries. Set one includes entries 1 through 16, set 2 includes
17 through 32, and so on. The entry numbers (1 through 128) appear
on the left side of the screen.
Extended Match Table